QUINCY, Ill. — Authorities in western Illinois' Quincy say a weekend fire has killed a father and his toddler son.

Adams County Coroner James Keller tells the Quincy Herald-Whig (http://bit.ly/1r3uIZe) that 43-year-old Lewis Bassett and 1-year-old Ladavion Bassett died after the fire Saturday in the family's rental home.

Another one of Lewis Bassett's sons, 3-year-old Lewis Bassett Jr., was critically injured and was taken to an unspecified St. Louis-area hospital. His medical status wasn't immediately clear Sunday.

Authorities are trying to determine what sparked the blaze.

The home's owner, Randy White, told the newspaper he had evicted the family from the house days earlier but was letting the elder Bassett remain at the home temporarily to clean it up.